Suica — a contactless smart card issued by JR East used for train/bus fares and as an e-money for purchases.
駅の改札でスイカをタッチして改札を通った。
I tapped my Suica at the station gate and went through.
スイカにチャージしてコンビニで飲み物を買った。
I charged my Suica and bought a drink at the convenience store.
スイカは首都圏の電車だけでなく、提携店舗でも電子マネーとして使える。
Suica can be used not only on trains in the metropolitan area but also as e-money at partner stores.